An eco friendly and solvent free method for the synthesis of Zinc oxide nano particles using glycerol as organic dispersant

Saravanan, M.; Dhivakar, S.; Jayanthi, S.

doi:10.1016/j.matlet.2011.09.009

Cited by 12 publications

(5 citation statements)

References 19 publications

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“…Photocatalytic technology, as an advanced oxidation process (AOP), provides an efficient and environmentally friendly method for the treatment of MG wastewater [15], which can realize the decolorization and mineralization of MG, eventually transforming MG into carbon dioxide and inorganic acid; possesses a low cost; is a simple operation; and has a high degradation efficiency [16].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO Nanoparticles Loaded on Biochar Derived from Spartina alterniflora with Superior Photocatalytic Degradation Performance

Hua

Wang³

et al. 2021

Nanomaterials

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Spartina alterniflora is an invasive plant from coastal wetlands, and its use in applications has garnered much interest. In this study, a composite photocatalyst (ZnO@BC) was synthesized by preparing zinc oxide (ZnO) nanoparticles with S. alterniflora extracts, S. alterniflora, and one-step carbonization, which was characterized using scanning electron microscope (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), Raman, X-ray photoelectron spectroscopy, ultraviolet–visible spectroscopy (UV–vis DRS), photoluminescence (PL) and N2 adsorption–desorption isotherm. The degradation capacity and mechanism of malachite green (MG) using ZnO@BC were analyzed under visible irradiation, and the degradation products of malachite green were detected by LC–MS. The results show that ZnO@BC has a larger surface area (83.2 m2/g) and various reactive groups, which enhance its photocatalytic efficiency, with the presence of oxygen vacancy further improving the photocatalytic activity. The total removal rate of malachite green (400 mg/L) using ZnO@BC is up to 98.38%. From the LC–MS analysis, it could be concluded that malachite green is degraded by demethylation, deamination, conjugate structure and benzene ring structure destruction. This study provides a novel idea for the high-value utilization of S. alterniflora.

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Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO Nanoparticles Loaded on Biochar Derived from Spartina alterniflora with Superior Photocatalytic Degradation Performance

Hua

Wang³

et al. 2021

Nanomaterials

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“…We found that students can summarize pieces of information, suggestions, or examples explained previously (Tala, 2009). This also shows the information given by the teachers to students are not done directly, but teacher's guide and help students to achieve information and build critical perspective (Rajendra et al, 2010;Saravanan et al, 2012;Rubba & Harkness, 1996). Table 2 illustrates that students' general understanding of VNOST.…”

Section: Implementation Of Vnostmentioning

confidence: 69%

Zinc Oxide Nanoparticles for Enhancing Students’ View of the Nature of Science and Technology

Priyand

Sukmafitri

Mudzakir

et al. 2020

Indonesian J. Sci. Technol

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This study aims to evaluate zinc oxide (ZnO) nanoparticles as a learning media to enhance students' understanding of View of Nature of Science and Technology (VNOST). The method used in this study: (i) understanding how to synthesize ZnO nanoparticles using a liquid-phase synthesis; (ii) implementation of ZnO nanoparticles to students and analysis their comprehension using Transcript Based Lesson Analysis (TBLA) on the Learning Video Recording and Adaptation Learning Transcript VNOST questionnaire, which is linked to the implementation and pattern of knowledge construction; and (iii) descriptive qualitative analysis to analyze the understanding of VNOST for each Category (Naïve, Has Merit and Realist). To support this study, several analyses were done, such as a scanning electron microscope and X-ray diffraction to characterize ZnO nanoparticles’ morphology and crystal structure, respectively, prior to giving this material for further learning to students. Experimental results showed that the use of ZnO nanoparticles is effective to improve the student comprehension. The understanding in the principle of nucleation and growth can be explained well since the reaction of ZnO is relatively fast. Students became more serious in listening during the learning process and more curious to study science and technology. Based on a comparative analysis of the initial and final ability of VNOST, it is proved that there was a change in students' views related to science and technology.

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“…The metal precursor and dispersant were directly mixed and heated on a hot plate for the mixture using glycerol and octyl alcohol as organic dispersants prior to combustion. ZnO nanoparticles produced using glycerol as fuel were produced as standard samples [3]. The initial temperature was set at 50°C and was raised systematically until the mixture combusted at ca.…”

Section: Synthesis Of Zno Nanoparticlesmentioning

confidence: 99%

Gel Combustion Synthesis and Characterizations of Nanocrystalline ZnO in Various Dispersants and Mol Ratio

Razak

Shah

Misran³

et al. 2013

AMM

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Zinc oxide nanoparticles were successfully synthesized using modified gel combustion synthesis route. Zinc nitrate was used as oxidant while fatty alcohol (8 carbon chains octyl alcohol) and fatty ester (12 carbon chains lauric acid) derived from palm oil as well as glycerol played the role of organic dispersants/fuel. X-ray diffraction (XRD) patterns of the calcined samples exhibited three prominent peaks at ca. 2θ = 31.9°, 34.6° and 36.4° corresponding to (100), (002) and (101) reflection planes which were well indexed to zinc oxide hexagonal phase with wurtzite structure. Additional peaks were not observed in XRD patterns suggesting that no other phases were formed during the combustion synthesis. The morphology of calcined samples produced using glycerol as fuel exhibited elongated spindle-like shapes at ca. 1 μm consisted of nanoparticles. Samples prepared using fatty alcohol as fuel exhibited hexagonal morphology with crystallites sizes of ca. 30 to 40 nm. These results suggested that palm oil derived fatty alcohols and fatty esters are alternative materials as organic dispersants in the production of metal nanoparticles using gel combustion synthesis. The resulting optical properties of ZnO nanocrystallites prepared in this study were similar to those obtain from bulk materials with energy band gap value at ca. 3.28 eV compared to 3.37 eV for the latter.

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An eco friendly and solvent free method for the synthesis of Zinc oxide nano particles using glycerol as organic dispersant

Cited by 12 publications

References 19 publications

Synthesis of ZnO Nanoparticles Loaded on Biochar Derived from Spartina alterniflora with Superior Photocatalytic Degradation Performance

Synthesis of ZnO Nanoparticles Loaded on Biochar Derived from Spartina alterniflora with Superior Photocatalytic Degradation Performance

Zinc Oxide Nanoparticles for Enhancing Students’ View of the Nature of Science and Technology

Gel Combustion Synthesis and Characterizations of Nanocrystalline ZnO in Various Dispersants and Mol Ratio

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